Compilare: main.cpp: In function 'int Query(int, int, int, int, int)': main.cpp:111:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:131:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("zoo.out", "w", stdout); ^ main.cpp: In function 'void Read(int&)': main.cpp:31:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp:36:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), pos = 0; ^ main.cpp: In function 'int binsearch(int)': main.cpp:51:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~ main.cpp: In function 'void read()': main.cpp:67:16: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] v[i].y = binsearch(v[i].y); ~~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:43:9: note: 'last' was declared here int last, middle; ^~~~